// JavaScript Document


var temp=0;
window.onload = 
function() {
	var obj=document.getElementById("menu")
	var obj_a=obj.getElementsByTagName("a")
	for (var i=0,j=obj_a.length;i<j;i++){
		obj_a[i].index=i
		obj_a[i].onclick=function(){cha(this)};
		obj_a[i].onmouseover=function(){overme(this)};
		obj_a[i].onmouseout=function(){outme(this)};
	}
}
function overme(o){
	var n=o.index;
	if (temp!=o.index) o.className="menu"+(n+1)+"_over";
}
function outme(o){
	var n=o.index;
	if (temp!=o.index) o.className="menu"+(n+1);
}
function cha(o){
	var n=o.index;
	var obj=document.getElementById("menu")
	var obj_a=obj.getElementsByTagName("a")
	for (var i=0,j=obj_a.length;i<j;i++){
		obj_a[i].className="menu"+(i+1);
		document.getElementById("tab"+(i+1)).style.display="none";
	}
	o.className="menu"+(n+1)+"_down";
	document.getElementById("tab"+(n+1)).style.display="block";
	o.blur()
	temp=o.index
}